1. There are still a lot of difficulties we have to overcome.
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2. Before the machines leave the factory, there is a series of tests that must be passed. 
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3. At the end of the speech he expressed the desire that he should come and work in China someday. 
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4. They signed an agreement that they should expand the trade between the two countries. 
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5. The commander gave orders that we should cross the river.
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6. She was excited when she heard the news. 
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7. I'm glad I have seen your mother.
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8. The mother was pleased when she saw her son doing so well at school. 
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9. He was very happy when he saw us so happy. 
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10. They will be disappointed when they hear it. 
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1. 你的作文需要修改。(动词-mg形式作宾语)
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2. 学习有关语言的知识比使用语言容易。(动词-ing形式作主语)
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3. 我们应该尽力增强我们的体质。(build up)
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4. 好的习惯是成功的关键。(lead to)
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5. 我们把书放进书柜的目的是不沾上灰尘。(keep... free from)
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6. 我们会议的重点是妇女权利问题。(focus)
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7. 她设法降低她的体重。(reduce)
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8. 对人们说的话我不会作评论。(comment)
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9. 你是最后一个通过驾驶执照考试的人。(the last+动词不定式)
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10. 作无益的后悔是没有用的。(it作形式主语)
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